Hyperbolic metamaterial feasible for fabrication with direct laser writing processes

Abstract

Received Month X, XXXX; revised Month X, XXXX; accepted Month X, XXXX;posted Month X, XXXX (Doc. ID XXXXX); published Month X, XXXX Stimulated emission depletion microscopy inspired direct laser writing (STED-DLW) processes can offer diffraction-unlimited fabrication of 3D-structures, not possible with traditional electron-beam or optical lithography. We propose a hyperbolic metamaterial for fabrication with STED-DLW. First, we design meandering wire structures with three different magnetic dipoles which can be excited under different incidences of light. Then, based on effective parameters corresponding to normal incidence and lateral incidence, we find that the hyperbolic dispersion relation for five-layer structure appears between 15THz to 20 THz. Finally, we investigate the influence of imaginary parts of the effective parameters on the metamaterial dispersion. The proposed metamaterial structure has also potential for three-dimensionally isotropic permeability despite geometric anisotropy.

Active plasmon injection scheme for subdiffraction imaging with imperfect negative index flat lens

“…We have shown that this approach can be used to control the noise amplification while at the same time recover features buried within the noise, thus enabling ultra-high resolution imaging far beyond the previous passive implementations of the plasmon injection scheme [56,88]. The convolution process to construct the auxiliary source in the proposed active scheme may be realized physically by different methods, metasurfaces [74][75][76][77][78][84][85][86] and hyperbolic metamaterials [81][82][83]89] being the primary candidates. A more detailed analysis on the design of such structures to implement the convolved auxiliary source will be the focus of our future research.…”

Review of near-field optics and superlenses for sub-diffraction-limited nano-imaging

“…[2][3][4][5][6] This resolution was extended further by apertureless SNOM systems, which employed a nanoscale scattering probe in the near-field instead of a subwavelength aperture. [7][8][9][10][11][12][13][14] At the turn of the new millennium, imaginative new approaches for controlling electromagnetic waves began to appear for imaging, [15][16][17][18][19][20][21][22][23] photovoltaics, [24][25][26] quantum information processing and simulations, [27][28][29][30][31] wireless communications, 32,33 and novel optical materials, [34][35][36][37][38][39][40] among many others. The advent of metamaterials with simultaneously negative permittivity and permeability 41 brought renewed interest in the properties of left-handed materials first proposed by Veselago,42 which Pendry demonstrated could be applied to sub-diffraction-limited imaging with his "perfect lens."…”

Controlling optical absorption in metamaterial absorbers for plasmonic solar cells

“…Also, the imaginary permittivity would preferably be larger at higher frequency. The approach presented here can be also applied to photodetectors and bulk metamaterials 34,[40][41][42] to minimize Ohmic losses.…”